DOC AIRBUS | AMM A320FRemoval of the Fan Rotor Blades [CFMI]
TASK 72-21-00-000-003-A
Removal of the Fan Rotor Blades
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Referenced Information
3. Job Set-up
Subtask 72-21-00-941-053-A ** ON A/C NOT FOR ALL
Subtask 72-21-00-020-053-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.02 07:32:31 UTC
Removal of the Fan Rotor Blades
CAUTION:
ALL FAN ROTOR BLADES SHALL BE MATCHMARKED OR NUMBERED FOR ASSEMBLY IN ORIGINAL ALIGNMENT AND POSITION USING ONLY APPROVED MARKING MATERIAL.
CAUTION:
BE CAREFUL IF THESE MARKS ARE SHOWN ON THE HUB OF THE REWORKED FAN DISK: "SHIMS REQUIRED" AND "DISK REPAIRED". DAMAGE CAN OCCUR IF YOU DO NOT FOLLOW CORRECT PROCEDURES FOR ENGINES POST CFM56 SB 72-0621.
CAUTION:
FOR ENGINES POST CFM56 SB 72-0621, BE CAREFUL WHEN YOU HANDLE THE SHIMS. THEY ARE THIN AND ARE EASILY DAMAGED. DO NOT USE TOO MUCH FORCE WHEN YOU REMOVE THE SHIMS FROM THE FAN BLADE ROOTS. THE COATING ON THE FAN BLADES AND THE SHIMS IS EASILY DAMAGED. OBEY THESE INSTRUCTIONS OR YOU WILL CAUSE DAMAGE TO THE EQUIPMENT.
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | ACCESS PLATFORM 1M(3 FT) |
| No specific | AR | HAMMER SNAP-ON CG240-9 - SLIDE, PULLER |
| No specific | 1 | MAT - PROTECTIVE |
| No specific | AR | WARNING NOTICE(S) |
| 856A2700 | 1 | ADAPTER,PULLER-FAN BLADE SPACERS |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP5061) | temporary marking |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 72-21-00-000-001-A | Removal of the Spinner Front Cone |
| TASK 72-21-00-000-002-A | Removal of the Spinner Rear Cone |
Spinner Rear Cone to Fan Blade Clearance Limits (PRE CFM56 SB 72-0621)Subtask 72-21-00-941-053-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
(4) Put the ACCESS PLATFORM 1M(3 FT) in position.
(5) Install MAT - PROTECTIVE in the lower half of the inlet cowl.
Subtask 72-21-00-010-051-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
(4) Put the ACCESS PLATFORM 1M(3 FT) in position.
(5) Install MAT - PROTECTIVE in the lower half of the inlet cowl.
B. Preparation For Removal of the Fan Blades.
(1) Remove spinner front cone. (Ref. AMM TASK 72-21-00-000-001)
(2) Remove spinner rear cone. (Ref. AMM TASK 72-21-00-000-002)
4. Procedure(1) Remove spinner front cone. (Ref. AMM TASK 72-21-00-000-001)
(2) Remove spinner rear cone. (Ref. AMM TASK 72-21-00-000-002)
NOTE: Removal will be easier if fan blade to be removed is placed at the 12 o'clock position.
Subtask 72-21-00-020-053-A ** ON A/C NOT FOR ALL
A. Remove the blade retainers:
PRE SB CFM 72-0621
(2) Remove, partially or completely, the O-ring (60) located between the fan blade platform (110) and the fan disk (80).
(3) Slide the spacer (90) toward the front of the fan disk (80) with the 856A2700 ADAPTER,PULLER-FAN BLADE SPACERS (856A2700G01), until the blade retainer (100) is released.
(4) Slide down the blade retainer (100) located in the fan disk (80). Remove the blade retainer.
(6) Slide the adjacent blades forward, if necessary, as follows:
(a) Pull the spacer (90) under the adjacent blade forward with the 856A2700 ADAPTER,PULLER-FAN BLADE SPACERS (856A2700G01) and HAMMER SNAP-ON CG240-9 - SLIDE, PULLER and HAMMER SNAP-ON CG240-9 - SLIDE, PULLER. Slide down and remove the retainer (100).
(b) Move the blade (110) radially inward to disengage the mid-span shroud. Then slide the blade forward until it comes out of the dovetail slot.
(c) Remove blade damper from the disk.
(d) Do the steps (a), (b) and (c) for the other adjacent blade.
END OF PRE SB CFM 72-0621
POST SB CFM 72-0621
(8) Remove, partially or completely, the O-ring (60) located between the fan blade platform (110) and the reworked fan disk (120).
(9) Slide the spacer (90) toward the front of the disk with the 856A2700 ADAPTER,PULLER-FAN BLADE SPACERS (856A2700G01) , until the blade retainer (100) is released.
(10) Slide down the blade retainer (100) located in the fan disk. Remove the blade retainer.
(b) If necessary, remove the shim (130) from the root of the fan blade (110).
(12) Slide the adjacent blades forward, if necessary, as follows:
(b) Move the blade (110) radially inward to disengage the mid-span shroud. Then slide the blade forward until it comes out of the dovetail slot.
2 If necessary, remove the shim (130) from the root of the fan blade (110).
(c) Do the steps (a) and (b) for the other adjacent blade.
END OF SB CFM 72-0621
PRE SB CFM 72-0621
NOTE: This procedure is for ENGINES PRE CFM56 SB 72-0621 with a non-reworked fan disk only.
(1) Make temporary mark on each blade: CAUTION:
USE ONLY APPROVED MARKING MATERIAL TO PREVENT DAMAGE TO THE BLADES.
(a) Temporarily mark each blade (110) from 1 to 36 on their convex side. Use a temporary marking (Material No.CP5061) . Blade No. 1 is the blade immediately above the offset hole in the fan disk bolt flange. Numbering is counterclockwise (CCW), forward locking aft. (2) Remove, partially or completely, the O-ring (60) located between the fan blade platform (110) and the fan disk (80).
(3) Slide the spacer (90) toward the front of the fan disk (80) with the 856A2700 ADAPTER,PULLER-FAN BLADE SPACERS (856A2700G01), until the blade retainer (100) is released.
(4) Slide down the blade retainer (100) located in the fan disk (80). Remove the blade retainer.
NOTE: Removal will be easier if you set the fan blade, that you must remove, at the 12 o'clock location.
(5) Move the blade (110) radially inward to disengage the mid-span shroud. Then slide the blade forward until it comes out of the dovetail slot. Remove the blade damper (70). (6) Slide the adjacent blades forward, if necessary, as follows:
(a) Pull the spacer (90) under the adjacent blade forward with the 856A2700 ADAPTER,PULLER-FAN BLADE SPACERS (856A2700G01) and HAMMER SNAP-ON CG240-9 - SLIDE, PULLER and HAMMER SNAP-ON CG240-9 - SLIDE, PULLER. Slide down and remove the retainer (100).
(b) Move the blade (110) radially inward to disengage the mid-span shroud. Then slide the blade forward until it comes out of the dovetail slot.
(c) Remove blade damper from the disk.
(d) Do the steps (a), (b) and (c) for the other adjacent blade.
END OF PRE SB CFM 72-0621
POST SB CFM 72-0621
NOTE: This procedure is for ENGINES POST CFM56 SB 72-0621 with a reworked fan disk only.
(7) Make temporary marks on each blade: CAUTION:
USE ONLY APPROVED MARKING MATERIAL TO PREVENT DAMAGE TO THE BLADES.
CAUTION:
MAKE SURE THAT THESE MARKS ARE SHOWN ON THE HUB OF THE FAN DISK: "SHIMS REQUIRED" AND "DISK REPAIRED". DAMAGE CAN OCCUR IF YOU DO NOT FOLLOW CORRECT PROCEDURES FOR ENGINES POST CFM56 SB 72-0621.
(a) Temporarily mark each blade (110) from 1 to 36 on their convex side. Use a temporary marking (Material No.CP5061) . Blade No. 1 is the blade immediately above the offset hole in the fan disk bolt flange. Numbering is counterclockwise (CCW), forward locking aft. (8) Remove, partially or completely, the O-ring (60) located between the fan blade platform (110) and the reworked fan disk (120).
(9) Slide the spacer (90) toward the front of the disk with the 856A2700 ADAPTER,PULLER-FAN BLADE SPACERS (856A2700G01) , until the blade retainer (100) is released.
(10) Slide down the blade retainer (100) located in the fan disk. Remove the blade retainer.
NOTE: Removal will be easier if you set the fan blade, that you must remove, at the 12 o'clock location.
(11) Move the blade (110) radially inward to disengage the mid-span shroud. Then slide the blade forward until it comes out of the dovetail slot. CAUTION:
BE CAREFUL WHEN YOU HANDLE THE SHIMS. THEY ARE THIN AND ARE EASILY DAMAGED. DO NOT USE TOO MUCH FORCE WHEN YOU REMOVE THE SHIMS FROM THE FAN BLADE ROOTS. THE COATING ON THE FAN BLADES AND THE SHIMS IS EASILY DAMAGED. OBEY THESE INSTRUCTIONS OR YOU WILL CAUSE DAMAGE TO THE EQUIPMENT.
(a) Remove the blade damper (70). (b) If necessary, remove the shim (130) from the root of the fan blade (110).
(12) Slide the adjacent blades forward, if necessary, as follows:
CAUTION:
MAKE SURE THAT THESE MARKS ARE SHOWN ON THE HUB OF THE FAN DISK: "SHIMS REQUIRED" AND "DISK REPAIRED". DAMAGE CAN OCCUR IF YOU DO NOT FOLLOW CORRECT PROCEDURES FOR ENGINES POST CFM56 SB 72-0621.
(a) Pull the spacer (90) under the adjacent blade forward with the 856A2700 ADAPTER,PULLER-FAN BLADE SPACERS and HAMMER SNAP-ON CG240-9 - SLIDE, PULLER and HAMMER SNAP-ON CG240-9 - SLIDE, PULLER. Slide down and remove the retainer (100). (b) Move the blade (110) radially inward to disengage the mid-span shroud. Then slide the blade forward until it comes out of the dovetail slot.
CAUTION:
BE CAREFUL WHEN YOU HANDLE THE SHIMS. THEY ARE THIN AND ARE EASILY DAMAGED. DO NOT USE TOO MUCH FORCE WHEN YOU REMOVE THE SHIMS FROM THE FAN BLADE ROOTS. THE COATING ON THE FAN BLADES AND THE SHIMS IS EASILY DAMAGED. OBEY THESE INSTRUCTIONS OR YOU WILL CAUSE DAMAGE TO THE EQUIPMENT.
1 Remove the blade damper (70). 2 If necessary, remove the shim (130) from the root of the fan blade (110).
(c) Do the steps (a) and (b) for the other adjacent blade.
END OF SB CFM 72-0621